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Lipids

45 questions found

Practice Questions

The phosphate group in phospholipids contributes mainly to

A. Energy storage
B. Hydrophilic property
C. Ester bond formation
D. Fatty acid synthesis

The phosphate-containing head is polar and interacts with water.

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Jun 27, 2026

A diglyceride differs from a triglyceride because it contains

A. One fatty acid
B. Two fatty acids
C. Three phosphate groups
D. No glycerol
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Jun 27, 2026

The hydrophilic portion of a phospholipid faces

A. Interior of membrane
B. Aqueous environment
C. Fatty acid tails
D. Protein core only
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Jun 27, 2026

Acylglycerols are produced through the reaction between

A. Amino acids and fatty acids
B. Glycerol and fatty acids
C. Glucose and fatty acids
D. Ribose and proteins
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Jun 27, 2026

The ester linkage in lipids is formed between

A. Amino and carboxyl groups
B. Hydroxyl and carboxyl groups
C. Phosphate and amino groups
D. Sulfur and oxygen
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Jun 27, 2026

Triglycerides primarily function as

A. Enzymes
B. Energy reserves
C. Genetic material
D. Hormones
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Jun 27, 2026

Biological membranes remain flexible because phospholipids possess

A. Polar heads and nonpolar tails
B. Three phosphate groups
C. Peptide chains
D. Cellulose fibers
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Jun 27, 2026

One molecule of glycerol can combine with a maximum of

A. One fatty acid
B. Two fatty acids
C. Three fatty acids
D. Four fatty acids
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Jun 27, 2026

The phosphate-containing lipid among the following is

A. Wax
B. Phospholipid
C. Triglyceride
D. Neutral fat
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Jun 27, 2026

Saturated fatty acids characteristically contain

A. One or more double bonds
B. No carbon-carbon double bonds
C. Triple bonds
D. Phosphate groups
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Jun 27, 2026

Unsaturated fatty acids differ from saturated fatty acids by possessing

A. Additional glycerol
B. One or more double bonds
C. Peptide bonds
D. Phosphate heads only
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Jun 27, 2026

Phospholipids contribute mainly to

A. Long-term energy storage
B. Membrane structure
C. Hormone synthesis only
D. DNA replication
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Jun 27, 2026

Lipids generally exhibit high solubility in

A. Water
B. Organic solvents
C. Blood plasma
D. Dilute acids
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Jun 27, 2026

Esterification of glycerol with fatty acids results in the formation of

A. Amino acids
B. Acylglycerols
C. Polysaccharides
D. Nucleotides
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Jun 27, 2026

The hydrophobic region of a phospholipid consists of

A. Phosphate group
B. Fatty acid tails
C. Glycerol only
D. Protein chains
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Jun 27, 2026

Energy stored in triglycerides exceeds carbohydrates because triglycerides contain

A. Less hydrogen
B. More hydrogen and less oxygen
C. More nitrogen
D. More sulfur
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Jun 27, 2026

The principal storage form of lipids in animals consists of

A. Phospholipids
B. Triglycerides
C. Steroids
D. Glycolipids
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Jun 27, 2026

During hydrolysis of a triglyceride, the products include

A. Three fatty acids and one glycerol
B. Three glycerol molecules
C. One fatty acid and three glycerol molecules
D. Amino acids and glycerol
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Jun 27, 2026

A phospholipid differs from a triglyceride because it contains

A. A phosphate group
B. Two glycerol molecules
C. Three phosphate groups
D. A protein molecule
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Jun 27, 2026
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